仿百度的关键词匹配搜索示例

XiaoyiXie

2013-09-25

代码如下：

<!DOCTYPE html> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>关键词匹配搜索仿百度</title> 
<meta name="description" content=" 内容介绍不超过100个中文"> 
<meta name="keywords" content=" 内容相关关键词3-5个"> 
<style> 
body, ul, li { margin: 0; padding: 0;} 
body{ font-size:12px; font-family:sumsun,arial;background:#FFFFFF;} 
.gover_search{ position:relative; z-index:99; height:63px; padding:15px 0 0 20px; border:1px solid #b8cfe6; border-bottom:0; background:url(../images/gover_search_bg.gif) repeat-x 0 0;} 
.gover_search_form{height:36px;} 
.gover_search .search_t{ float:left; width:112px; line-height:26px; color:#666;} 
.gover_search .input_search_key{ float:left; width:462px; height:18px; padding:3px; margin-right:5px; border:1px solid #ccc; line-height:18px; background:#fff;} 
.gover_search .search_btn{ float:left; width:68px; height:26px; overflow:hidden; border:1px solid #ccc; text-align:center; color:#ff3300; letter-spacing:5px; background:url(../images/gover_search_bg.gif) no-repeat 0 -79px; cursor:pointer; font-weight:bold;} 
.gover_search .search_suggest{ position:absolute; z-index:999; left:132px; top:41px; width:468px; border:1px solid #ccc;border-top:none; display:none;color:#004080; } 
.gover_search .search_suggest li{height:24px; overflow:hidden; padding-left:3px; line-height:24px; background:#fff; cursor:default;} 
.gover_search .search_suggest li.hover{background:#ddd;} 
.num_right{float:right;text-align:right;line-height:24px;padding-right:10px} 
</style> 
</head> 

<body> 

<div class="gover_search"> 
<div class="gover_search_form clearfix"> 
<span class="search_t">关键词匹配搜索</span> 
<input type="text" class="input_search_key" id="gover_search_key" placeholder="请输入关键词直接搜索" /> 
<button type="submit" class="search_btn">搜索</button> 
<div class="search_suggest" id="gov_search_suggest"> 
<ul> 
</ul> 
</div> 
</div> 
</div> 
<script type="text/javascript" src="http://jt.875.cn/js/jquery.js"></script> 

<script type="text/javascript"> 

//实现搜索输入框的输入提示js类 
function oSearchSuggest(searchFuc){ 
var input = $('#gover_search_key'); 
var suggestWrap = $('#gov_search_suggest'); 
var key = ""; 
var init = function(){ 
input.bind('keyup',sendKeyWord); 
input.bind('blur',function(){setTimeout(hideSuggest,100);}) 
} 
var hideSuggest = function(){ 
suggestWrap.hide(); 
} 

//发送请求，根据关键字到后台查询 
var sendKeyWord = function(event){ 

//键盘选择下拉项 
if(suggestWrap.css('display')=='block'&&event.keyCode == 38||event.keyCode == 40){ 
var current = suggestWrap.find('li.hover'); 
if(event.keyCode == 38){ 
if(current.length>0){ 
var prevLi = current.removeClass('hover').prev(); 
if(prevLi.length>0){ 
prevLi.addClass('hover'); 
input.val(prevLi.html()); 
} 
}else{ 
var last = suggestWrap.find('li:last'); 
last.addClass('hover'); 
input.val(last.html()); 
} 

}else if(event.keyCode == 40){ 
if(current.length>0){ 
var nextLi = current.removeClass('hover').next(); 
if(nextLi.length>0){ 
nextLi.addClass('hover'); 
input.val(nextLi.html()); 
} 
}else{ 
var first = suggestWrap.find('li:first'); 
first.addClass('hover'); 
input.val(first.html()); 
} 
} 

//输入字符 
}else{ 
var valText = $.trim(input.val()); 
if(valText ==''||valText==key){ 
return; 
} 
searchFuc(valText); 
key = valText; 
} 

} 
//请求返回后，执行数据展示 
this.dataDisplay = function(data){ 
if(data.length<=0){ 
suggestWrap.hide(); 
return; 
} 

//往搜索框下拉建议显示栏中添加条目并显示 
var li; 
var tmpFrag = document.createDocumentFragment(); 
suggestWrap.find('ul').html(''); 
for(var i=0; i<data.length; i++){ 
li = document.createElement('LI'); 
li.innerHTML = data[i]; 
tmpFrag.appendChild(li); 
} 
suggestWrap.find('ul').append(tmpFrag); 
suggestWrap.show(); 

//为下拉选项绑定鼠标事件 
suggestWrap.find('li').hover(function(){ 
suggestWrap.find('li').removeClass('hover'); 
$(this).addClass('hover'); 

},function(){ 
$(this).removeClass('hover'); 
}).bind('click',function(){ 
$(this).find("span").remove(); 
input.val(this.innerHTML); 
suggestWrap.hide(); 
}); 
} 
init(); 
}; 

//实例化输入提示的JS,参数为进行查询操作时要调用的函数名 
var searchSuggest = new oSearchSuggest(sendKeyWordToBack); 

//这是一个模似函数，实现向后台发送ajax查询请求，并返回一个查询结果数据，传递给前台的JS,再由前台JS来展示数据。本函数由程序员进行修改实现查询的请求 
//参数为一个字符串，是搜索输入框中当前的内容 
function sendKeyWordToBack(keyword){ 
/* var obj = { 
"keyword" : keyword 
}; 
$.ajax({ 
type: "POST", 
url: "${ctx}/front/suqiu2/search/prompt-keyword.action", 
async:false, 
data: obj, 
dataType: "json", 
success: function(data){ 
//var json = eval("("+data+")"); 
var key=data.split(","); 
var aData = []; 
for(var i=0;i<key.length;i++){ 
//以下为根据输入返回搜索结果的模拟效果代码,实际数据由后台返回 
if(key[i]!=""){ 
aData.push(key[i]); 
} 
} 
//将返回的数据传递给实现搜索输入框的输入提示js类 
searchSuggest.dataDisplay(aData); 
} 
}); */ 

//以下为根据输入返回搜索结果的模拟效果代码,实际数据由后台返回 
var aData = []; 
aData.push('<span class="num_right">约100个</span>'+keyword+'返回数据1'); 
aData.push('<span class="num_right">约200个</span>'+keyword+'返回数据2'); 
aData.push('<span class="num_right">约100个</span>'+keyword+'返回数据3'); 
aData.push('<span class="num_right">约50000个</span>'+keyword+'返回数据4'); 
aData.push('<span class="num_right">约1044个</span>'+keyword+'2012是真的'); 
aData.push('<span class="num_right">约100个</span>'+keyword+'2012是假的'); 
aData.push('<span class="num_right">约100个</span>'+keyword+'2012是真的'); 
aData.push('<span class="num_right">约100个</span>'+keyword+'2012是假的'); 
//将返回的数据传递给实现搜索输入框的输入提示js类 
searchSuggest.dataDisplay(aData); 
} 
</script> 
</body> 
</html>

搜索百度 background line-height